[R-390] Audio Gain Pots?

[Barry]

I don't know if the audio pots in the R390A are linear (I think they'd be audio taper?); however, if they're linear, here are some inexpensive replacements.  Not sure if these are as high a quality as the originals but just throwing this out in case someone's looking:

http://www.goldmine-elec-products.com/prodinfo.asp?number=G20638A&mc_cid=863e7e4ed8&mc_eid=fed8d67263


Thanks,
Barry - N4BUQ